The airline was also forced to divert the Brussels-bound flight EI630 to Amsterdam.

All Aer Lingus flights to Brussels tomorrow have also been cancelled due to the continued closure of Brussels Zaventem.

Meanwhile, Ryanair says flights that were due to operate to and from Brussels Zaventem tomorrow will now operate to and from Brussels Charleroi.

"Customers booked to fly from Brussels should make their way to Brussels Charleroi and allow extra time for their journey," the airline says.

Ryanair will also offer refunds and free transfers: "Customers whose flights have been cancelled can apply for a full refund or transfer to the next available flight. Customers booked to travel to/from Brussels Zaventem today or tomorrow, can transfer onto another flight free of charge within the next 2 weeks," the company told Newstalk.

An additional post on Ryanair's website read, "Our flights to Alicante, Barcelona and Dublin have been cancelled and a number of flights have diverted to Brussels Charleroi. Customers travelling to/from Brussels Zaventem today should check the Ryanair.com website before travelling to the airport."

Passengers intending to travel to Brussels today should contact their airline for latest flight info before coming to @DublinAirport today.